Does propane or octane (C₈H₁₈) exhibit stronger dispersion forces? A) Propane, because the smaller molecules can get closer to one another B) Propane, because propane has a larger permanent dipole C) Octane, because octane has a larger permanent dipole D) Octane, because octane has more surface area E) They both have the same amount of forces

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Quizplus · Accepted Answer

Octane has more surface area, which allows for more points of contact and stronger dispersion forces. Propane is a smaller molecule, but does not have as much surface area. The size of the molecule does not play as large of a role in determining the strength of dispersion forces as the surface area.

Does Propane or Octane (C8H18) Exhibit Stronger Dispersion Forces

Does Propane or Octane (C₈H₁₈) Exhibit Stronger Dispersion Forces